[GHC] #2807: the 'impossible' happened

[GHC]

#2807: the 'impossible' happened
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    Reporter:  celes             |        Owner:                  
        Type:  bug               |       Status:  closed          
    Priority:  normal            |    Milestone:                  
   Component:  Compiler          |      Version:  6.6             
    Severity:  normal            |   Resolution:  wontfix         
    Keywords:                    |   Difficulty:  Unknown         
    Testcase:                    |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |  
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Comment (by celes):

 I will upgrade, thanks.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2807#comment:3>
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